Hi Ant, I think you can do it by implementing your own Bucketer.
Cheers, Kostas . > On Aug 16, 2017, at 1:09 PM, ant burton <apburto...@gmail.com> wrote: > > Hello, > > Given > > // Set StreamExecutionEnvironment > final StreamExecutionEnvironment env = > StreamExecutionEnvironment.getExecutionEnvironment(); > > // Set checkpoints in ms > env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime); > > // Add source (input stream) > DataStream<String> dataStream = StreamUtil.getDataStream(env, params); > > How can I construct the s3_filename from the content of the an event, it > seems that whenever I attempt this I either have access to an event or access > to .addSink but not both. > > dataStream.addSink(new BucketingSink<String>("s3a://flink/" + > s3_filename)); > > > Thanks, > > > >